Home / 21,141.46-31,675.58-11,131.40

Finding the Fourth Proportional to 21,141.46, 31,675.58 and 11,131.40

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Solution

The fourth proportional to 21,141.46, 31,675.58 and 11,131.40 is: 16,677.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.46 : 31,675.58 = 11,131.40 : x
  2. Step 2: Convert to fraction form
    21,141.46/31,675.58 = 11,131.40/x
  3. Step 3: Cross multiply
    21,141.46x = 31,675.58 × 11,131.40
  4. Step 4: Simplify right side
    21,141.46x = 352,593,551.21
  5. Step 5: Solve for x
    x = 352,593,551.21/21,141.46
  6. Step 6: Final answer
    x = 16,677.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.